chore(storage): prepare v0.6.0 release (#225)

Support latest pkg:google_cloud

Author: kevmoo

pkgs/google_cloud_storage/CHANGELOG.md

@@ -1,8 +1,9 @@
-## 0.6.0-wip
+## 0.6.0
 
 * **BREAKING:** Rename `Storage.insertObject` to `Storage.uploadObject`.
 * Add `Storage.uploadObjectFromString`.
 * Add `StorageObject.uploadFromString`.
+* Require google_cloud: '>=0.3.0 <0.5.0'.
 
 ## 0.5.1
 

pkgs/google_cloud_storage/pubspec.yaml

@@ -16,7 +16,7 @@ name: google_cloud_storage
 description: >-
   A client for Google Cloud Storage, a managed service for storing, archiving,
   and serving unstructured data of any size.
-version: 0.6.0-wip
+version: 0.6.0
 repository: https://github.com/googleapis/google-cloud-dart/tree/main/pkgs/google_cloud_storage
 
 environment: